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Vitamins

Vitamin D3 Tablets, 270 tablets

£14.49 for 270 tablets at Bulk. That works out at 1p per 1,000 IU, which ranks it 15th of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU1pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.

A day1p

A week9p

A month40p

A year£4.90

At one 1,000 IU dose a day, this pack lasts 3 years. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Servings: 270 ÷ 1 per serving = 270
In the pack: 270 × 4,000 IU = 1,080,000 IU
£14.49 ÷ 1,080,000 IU × 1,000 IU = 1.34p per 1,000 IU
A week 1.34p × 7 = 9p · a month × 30 = 40p · a year × 365 = £4.90
Amount per serving: stated on the label.

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

Cheaper vitamin D3

All 207, ranked →

Vitamin D3 + K2 540 Brand NewProtein Works · 4,000 IU a serving · 33p a month · a pack lasts 5.9 years1p£23.99View at Protein Works

VitaBrightVitamin D3 4000IUVitaBright · 4,000 IU a serving · 35p a month · a pack lasts 4.7 years1p£19.99View at VitaBright

VitaBrightVitamin D3 TabletsVitaBright · 4,000 IU a serving · 35p a month · a pack lasts 4.7 years1p£19.99View at VitaBright

Vitamin D3 + K2 360 Brand NewProtein Works · 4,000 IU a serving · 37p a month · a pack lasts 3.9 years1p£17.99View at Protein Works

4 HIM & HERVitamin D3 50ug (2000IU) Cholecalciferol 1 Year's Supply 365 TabletsLloyds Pharmacy · 2,000 IU a serving · 40p a month · a pack lasts 2 years1p£9.76View at Lloyds Pharmacy

This productBulk · 4,000 IU a serving · 40p a month · a pack lasts 3 years1pshown above

Cheapest anywhere: 1p per 1,000 IU at WeightWorld, 23p a month less than this one at the same 1,000 IU dose.

Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.

Sizes

Pack	Price	Per dose
270 tabletsthis one	£14.49	1p
90 tablets	£5.99	2p

Pack sizes

Pack	Price	Per dose	A year
270 tabletsthis pack	£14.49	1p	£4.90
90 tablets	£5.99	2p	£6.07

This pack is the cheapest of the 2 sizes per dose.

On the label

Vitamin D3 · Vitamin D3: 4,000 IU per serving (stated on the label)
Pack: 270 tablets · 270 servings · 1 tablet(s) a serving
Cost per serving: 5p (270 servings in the pack)

More label details

Claimed on the listing: vegetarian
Barcode: 5060343744028
Sold by: Bulk
What the listing says: “270 Tablets” · “Per Serving (1 Tablet)” · “Vitamin D3 (Cholecalciferol) ; 100μg ; 2000”

Ingredients

Bulking Agents (Calcium Carbonate, Microcrystalline Cellulose), Vitamin D3 Preparation (Maltodextrin, Starch, Sucrose, Cholecalciferol), Anti-Caking Agent (Magnesium Stearate). Vegetarian, Halal, GLP1-Friendly*

From the Bulk listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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Daily doseIUFordays

One 1,000 IU dose is our comparison unit, not a recommendation.

Price history

2 price changes since 17 September 2026. Checked on 31 days, most recently 29 October 2026.

Lowest recorded: £13.4923 Sept
Highest recorded: £14.495 Oct
First recorded: £14.4917 Sept
Checked on: 31 dayssince 17 Sept

Pack price at each check.

5 Oct Up at Bulk: £13.49 → £14.49 (+7.4%)
23 Sept Down at Bulk: £14.49 → £13.49 (−6.9%)
17 SeptFirst checked at Bulk: £14.49

Questions about this product

How much does Bulk Vitamin D3 Tablets cost per 1,000 IU?

1p per 1,000 IU, from £14.49 for 270 tablets at Bulk, checked on 29 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 15th of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

3 years at one 1,000 IU dose. The pack holds 1,080,000 IU in total.

About Bulk

Founded 2006 · Colchester, England

Bulk is a British sports nutrition company based in Colchester, Essex. Adam Rossiter and Elliot Dawes, who met at the University of Essex, started it in 2006 as Bulk Powders; it was renamed Bulk at the start of 2021, and the founders remain its majority owners.

All 133 Bulk products, priced per dose Visit Bulk (opens in a new tab)

Keep comparing

All vitamin D3Every form, cheapest per 1,000 IU first Vitamin D3 guideWhat it is, why people take it, how the forms differ BulkAll 133 products from this brand, per dose VitaminsEverything else we price in this category Vitamin D3 price historyEvery vitamin D3 product's price per dose and price history Build a basketThe cheapest way to buy several at once How we compareWhere every number on this page comes from